CHEAP HACK to fix the problem. This should REALLY look at the first line

CHEAP HACK to fix the problem.  This should REALLY look at the first line
returned and check that for a standard structure thing and see if it extends
onto multiple lines.  If so, there is always a size sent out, so have this
function scan past that size and then look for the end tag.  Since I don't
have the time to delve into IMAP structure to get this done perfectly, I
just do a cheap hack to scan to see if there is at least one more character
incoming from the IMAP server.  Maybe if I have time, I'll tackle this
further.

git-svn-id: https://svn.code.sf.net/p/squirrelmail/code/trunk/squirrelmail@961 7612ce4b-ef26-0410-bec9-ea0150e637f0